What is it you are trying to do with that value? You are talking about a table calculation of somekind maybe window_max once you have everything in descending order by you datetime dimension or potentially a lookup function depending on what you want to do with those values other than just display them? There are a number of ways I could think of that would narrow your results to the Max case but you have a set of dimensions that are not always present. What data source are you using as well, Excel/SQL/Other?

If you are using Tableau 8.1, the new RANK_UNIQUE() calc with the correct sort can be used to find the last non-Null value. However, to get that for each measure you'd need to have unpivoted data so the Measure is a dimensional value instead of separate columns.

Note that the scale for Internet Users and Mobile cellular subscriptions are on a scale of 100, while Motor vehicles is on a scale of 1,000. How can you convert the scale so that they are all the same - using the underlying data?